* {
    padding: 0px;
    margin: 0px;
}

.box {
    width: 750px;
    height: 300px;
    overflow: hidden;
    position: relative;
}

ul {
    list-style: none;
    position: absolute;
    bottom: 10px;
    left: 50%;
    margin-left: -60px;
}

ul li {
    float: left;
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    margin-right: 10px;

}

ul li.active {
    background: gray;
}